<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登陆</title>
</head>
<body>
<form action="" method="post">
    账号：<input type="text" name="username" placeholder="用户名">
    密码：<input type="password" name="password" placeholder="密码">
    <input type="submit" value="登陆"></input>
</form>
</body>
</html>